guilt and worry

So I have been sinning for awhile. recently I cracked. I was on omegle (a sin right there) and was talking dirty with someone. Then I realized what I was doing and left.

1. I feel horrible. I cried and cried and asked to be forgiven, but still feel guilty. I'm not going to tell my family, because it does not involve them. But I just feel like God has not forgiven me, how can I stop being guilty feeling?

2. I am scared the guy will hack me! Can God make him not, also not try to find me? Or am I just worrying over nothing?